NOAA S-57 chart cell

Louisiana

US4LA1FO

Usage band
Approach · code 4
Current edition
1.5
Features
2,910
S-57 layers
48
Published
May 5, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
29.70000° N
South
29.40000° N
West
89.70000° W
East
89.40000° W
Center
29.55000° N, 89.55000° W
Bounds area
282 sq nm
Feature density
10.3105 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
60.6
Smallest layer
1
Largest layer
531
Area sq km
968
Features per sq km
3.00606
  1. COALNE Coastline 531
  2. LNDRGN Land region 409
  3. LNDARE Land area 381
  4. OFSPLF 309
  5. RIVERS River 283
  6. LAKARE 111
  7. DEPARE Depth area 101
  8. SEAARE Sea area 99
  9. PIPSOL 93
  10. LIGHTS Light 72
  11. DAYMAR 68
  12. DEPCNT Depth contour 65
  13. OBSTRN Obstruction 57
  14. PILPNT 48
  15. BCNLAT Lateral beacon 46
  16. M_QUAL Data quality 36
  17. BCNSPP Special purpose beacon 35
  18. SLCONS Shoreline construction 27
  19. CANALS 19
  20. CTNARE Caution area 18

Nearby Chart Cells

Approach usage band

  1. Mississippi River and Barataria Bay US4LA1FN - about 16 nm away
  2. Gulf of America to Breton Sound and Chandeleur Sound US4LA1FP - about 16 nm away
  3. Louisiana US4LA1EO - about 18 nm away
  4. Mississippi River - Gulf Outlet and Lake Borgne US4LA1GO - about 18 nm away
  5. Louisiana US4LA1GN - about 24 nm away
  6. Chandeleur Sound and Eloi Bay US4LA1GP - about 24 nm away

Current Edition Files

The NOAA ZIP archive is the upstream source for this chart cell; the other files are Open Ships generated derivatives for web and GIS use.

Editions

Edition Published Metadata
1.5 May 5, 2026 metadata.json